That doesn't exist in SR5 as far as I know. Perhaps an earlier edition? There are anti-vehicle rockets, but they aren't electrical discharge, they're just powerful explosives.
Strictly speaking, I don't think that kind of thing exists. As far as I know, in Shadowrun only magic can create ball lightning, which is why there's no electric-damage explosives. Of course, I could be missing something and be totally wrong, in which case someone will chime in.
A long-range, vehicle-disabling electric weapon sounds like it'd probably just be a powerful sniper rifle with stick-n-shock rounds, which will brick a vehicle in two hits regardless of how much armor it has, unless the vehicle is protected against electric damage. As for an AoE version, it probably isn't possible outside of a really-high Force Ball Lightning spell.
Or some awful Spirit of Air just causing thunder storms and melting tanks, but that's a bit different.